Finch, from Colac - the only century-maker in this season's Big Bash League - has impressed around the country with his leadership as well as his strokeplay for the Melbourne Renegades.

But it's his imperious Ryobi Cup form - 497 runs for Victoria at an average of 99.4 this season - that has him in the box seat to be Warner's ongoing partner as a right-left combination at the top of the order.

"Any time you go in with confidence is great. It's good to be picked when you're in form," Finch said.

"I'm ready to go, I feel like I'm in really good form and hitting them well in the T20s, I just can't wait.

"It was very exciting to get the call from (selection chairman) John (Inverarity). It's something I've looked forward to for a long time, representing Australia."

Finch said it would be disappointing to miss games for the Renegades as they closed on the BBL finals.

"But Australian cricket is the No.1 priority and I'll be happy to give that up any day to play for Australia."

He said he wouldn't alter his natural fluent style against Sri Lanka.

"You go in with a similar mindset. My game is to be attacking and try to take them on a little bit, (but) obviously it depends on conditions and (game) scenarios."

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